And, those sights (or non-sights) depend on the weather, the number of days, hours or minutes available, the cost, the degree of interest in photography or of seeing alpine wildflowers or railroad engineering or snow, the ages and fitness of your party, and all of those relative to the value of different choices for the way to spend the time.

<<"So here's my view on the Landwasser viaduct: Ithink it's an impressive viaduct, although the thrill of riding it onlylasts half a minute. But if you like scenic trains the ride as a wholeis worth it. ...... ">>

A good point. It fell out of my comments when I lost a partially complete message during editing. It is a good train ride with worthwhile scenery.

<<"Fora real good view of it you can follow an easy trail from the railstation of Filisur .......... viewing point ...... A longer hike can be found on www.wanderrouten.ch/la ndwasserviadukt.htm, passing both viaducts.">>

Thank you for both of those suggestions. Now I have another good reason to go back.